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Nike Brand Size Guides
| Size | Chest (INCH) | Waist (INCH) |
| S | 35-37.5 | 29-32 |
| M | 37.5-41 | 32-35 |
| L | 41-44 | 35-38 |
| XL | 44-48.5 | 38-43 |
| 2XL | 48.5-53.5 | 43-47.5 |
| 3XL | 53.5-58 | 47.5-52.5 |
| 4XL | 58-63 | 52.5-57 |
| Size | Age | Chest (INCH) | Waist (INCH) |
| XS | 7-8 | 25.5-26 | 23.5-24 |
| S | 8-10 | 26-27 | 24-25.5 |
| M | 10-12 | 27-29.5 | 25.5-27 |
| L | 12-13 | 29.5-32 | 27-28.5 |
| XL | 13-15 | 32-35 | 28.5-29.5 |
| Size | Age | Chest (INCH) | Height (INCH) |
| XS | 3-4 | 20.75-22 | 38-41 |
| S | 4-5 | 22-23 | 41-43 |
| M | 5-6 | 23-24 | 43-45.5 |
| L | 6-7 | 24-24.75 | 45.5-48 |
| XL | 7-8 | 24.75-26 | 48-50 |
| Size | Chest (CM) | Waist (CM) |
| S | 88-96 | 73-81 |
| M | 96-104 | 81-89 |
| L | 104-112 | 89-97 |
| XL | 112-124 | 97-109 |
| 2XL | 124-136 | 109-121 |
| 3XL | 136-148 | 121-133 |
| 4XL | 148-160 | 133-145 |
| Size | Age | Chest (CM) | Waist (CM) |
| XS | 7-8 | 64.5-66 | 59.5-61.5 |
| S | 8-10 | 66-69 | 61.5-65 |
| M | 10-12 | 69-75 | 65-69 |
| L | 12-13 | 75-81.5 | 69-72.5 |
| XL | 13-15 | 81.5-88.5 | 72.5-75.5 |
| Size | Age | Chest (CM) | Height (CM) |
| XS | 3-4 | 53-56 | 96-104 |
| S | 4-5 | 56-59 | 104-110 |
| M | 5-6 | 59-61 | 110-116 |
| L | 6-7 | 116-122 | |
| XL | 7-8 | 63-66 | 122-128 |